Question

Find the value of ‘k' if x=2,y=1 is a solution of the equation 5x+7y=2k​

Answer 1

Answer:

Step-by-step explanation:

Answer 2

➤ Answer

• The value of k = 17/2.

➤ Given

• x and y are the solution of the equation 5x + 7y = 2k where x = 2 and y = 1.

➤ To Find

• The value of k.

➤ Step By Step Explanation

Given that value of x and y are the solution of the equation 5x + 7y = 2k where x = 2 and y = 1

We need to find the value of k.

So let's do it !!

By substituting the value of x and y.

➠ 5x + 7y = 2k

➠ 5(2) + 7(1) = 2k

➠ 10 + 7 = 2k

➠ 17 = 2k

➠ 17/2 = k

Therefore the value of k = 17/2.

➤ Check

By substituting the values of x, y and k in the equation.

L.H.S. ⤵

➠ 5(2) + 7(1)

➠ 10 + 7

➠ 17

R.H.S. ⤵

➠ 2(17/2)

➠ 2 × 17/2

➠ 17

Hence, L.H.S. = R.H.S.

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